COLUMBIA, S.C. — Sen. Rand Paul's target audience is unique among the presidential contenders. It skews younger and more libertarian.

That may make the Kentucky Republican the ideal candidate to attend a "Pints for Liberty" event, as he did Friday, but Paul says he also thinks that appeal suits him for a long campaign slog. As Paul traveled to the first-in-the-South primary state Friday, his stump speech was well-honed and well-received at a sunset gathering on the lawn of the small Rat River Brewery.

FARRAGUT, Iowa — Locked in a highly competitive House contest, Republican David Young is looking to capitalize on some of his former boss's goodwill in the final days of the race.

This week Young, ex-chief of staff to Iowa GOP Sen. Charles E. Grassley kicked off a four-day tour of Iowa's 3rd District with the popular senator in tow — hitting each of the district's 16 counties to greet voters and drum up support for his bid. It's a pared-down version of what Iowans affectionately dub, "The Full Grassley ," in which the 81-year-old senator traverses every one of the Hawkeye State's 99 counties annually.

ST. GEORGE ISLAND, Fla. — Former Florida first lady Adele Graham does not entertain the word “if” in polite conversation, at least when discussing the political future of her daughter Gwen. It’s only “when.”

The wife of ex-Florida governor and senator Bob Graham treats doubt that Gwen Graham will oust Republican Rep. Steve Southerland II with a gentle arm pat and tone of voice usually reserved for obscenity or wearing white after Labor Day.

Readers will have one more opportunity this week to pick the House and Senate races Roll Call will cover from the ground in the final weeks of the midterms.

Last week, thousands of votes were cast to send reporters @cahnemily and @alexis_levinson on the road in our first #RCReadersChoice survey. Two House races and two Senate races lead their packs, and now readers have until Thursday at 5 p.m. for the runoff contest.

Landrieu poses for a selfie with LSU football fans as she campaigns at tailgate parties on campus. (Bill Clark/CQ Roll Call)

BATON ROUGE, La. — Six weeks from Election Day, Sen. Mary L. Landrieu gathered the troops on the Louisiana State University campus, where tens of thousands of football fans and prospective voters congregated for hours ahead of the Saturday night game.

The three-term Democrat faces arguably her most challenging race yet against, among others, Republican Rep. Bill Cassidy, who worked the Tigers fans for votes a couple hours later. Landrieu's best shot may be to break 50 percent in the November jungle primary, but that avenue to victory has shrunk since her last race in a state increasingly difficult for any Democrat to win.

That's what a campaign staffer warned Democratic Sen. Mary L. Landrieu as she eyed an opening to the Parade Grounds in the center of Louisiana State University, where football fans began setting up intricate tailgate parties campus-wide 24 hours before the Saturday night game.